Free Valkyrie Wings accessory for Spiral Knights with energy purchase

Sega is running a limited time promotion for its MMORPG Spiral Knights, which it developed in conjunction with Three Rings Design and released to the public last year.

From now until Sunday, March 25, players who purchase a $9.95 Energy Pack will also receive one of eleven free, randomly chosen Valkyrie Wings for their Knight. Each costume accessory is unique and fully animated: